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mm: replace get_user_pages_unlocked() write/force parameters with gup_flags

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This removes the 'write' and 'force' use from get_user_pages_unlocked()
and replaces them with 'gup_flags' to make the use of FOLL_FORCE
explicit in callers as use of this flag can result in surprising
behaviour (and hence bugs) within the mm subsystem.

Signed-off-by: Lorenzo Stoakes <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Lorenzo Stoakes 2016-10-13 01:20:13 +01:00 • committed by Linus Torvalds
commit c164154f66
14 changed files with 27 additions and 36 deletions
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5
drivers/scsi/st.c
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@ -4922,9 +4922,8 @@ static int sgl_map_user_pages(struct st_buffer *STbp,
res = get_user_pages_unlocked(
uaddr,
nr_pages,
rw == READ,
0, /* don't force */
pages);
pages,
rw == READ ? FOLL_WRITE : 0); /* don't force */
/* Errors and no page mapped should return here */
if (res < nr_pages)